package com.ji.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //登陆成功之后应该有用户的session
        Object session = request.getSession ().getAttribute ("loginUser");

        if(session==null)
        {
            request.setAttribute ("msg","没有权限，先登录");
            request.getRequestDispatcher ("/index.html").forward (request,response);
            return false;
        }
        else{
            return true;
        }
    }
}
